contributor author | S. Wang | |
contributor author | K. Komvopoulos | |
date accessioned | 2017-05-08T23:54:44Z | |
date available | 2017-05-08T23:54:44Z | |
date copyright | October, 1997 | |
date issued | 1997 | |
identifier issn | 0742-4787 | |
identifier other | JOTRE9-28672#830_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/119411 | |
description abstract | During the starting operation of magnetic rigid disks, a stiction phenomenon characterized by a high friction force may be encountered due to the smoothness of the contacting surfaces and the small thickness of the lubricant film. Since friction measurement using a force transducer yields a signal proportional to the slider displacement, the real friction force at the head-disk interface cannot be measured directly. In the present study, a dynamic data analysis scheme is developed to obtain the real friction force as a function of time based on the measured apparent friction force. Electric contact resistance measurements demonstrate that the transition from static to kinetic friction occurs before the apparent friction force reaches a maximum value. Assuming a constant acceleration of the disk, the relative slip velocity at the contact interface is obtained as a function of time. The relationship between the shear stress and shear strain rate for a relatively thick lubricant film is found to be approximately linear up to a critical value of the shear stress. Due to the extremely high shear strain rates, the maximum real friction force can be significantly greater than the maximum static friction force. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Friction Force, Contact Resistance, and Lubricant Shear Behavior at the Magnetic Head-Disk Interface During Starting | |
type | Journal Paper | |
journal volume | 119 | |
journal issue | 4 | |
journal title | Journal of Tribology | |
identifier doi | 10.1115/1.2833893 | |
journal fristpage | 830 | |
journal lastpage | 839 | |
identifier eissn | 1528-8897 | |
keywords | Force | |
keywords | Friction | |
keywords | Lubricants | |
keywords | Shear (Mechanics) | |
keywords | Disks | |
keywords | Contact resistance | |
keywords | Stiction | |
keywords | Stress | |
keywords | Measurement | |
keywords | Displacement | |
keywords | Signals | |
keywords | Transducers AND Thickness | |
tree | Journal of Tribology:;1997:;volume( 119 ):;issue: 004 | |
contenttype | Fulltext | |